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    Researchers provide new Insight into Dark Matter Halos

    April 17, 2017, Categories  Astronomy/Space

    An image of a simulated galaxy cluster showing evidence for a boundary, or "edge" from a 2015 paper in the Astrophysical Journal by Surhud More, Benedikt Diemer and Andre Kravtsov.

    An image of a simulated galaxy cluster showing evidence for a boundary, or “edge” from a 2015 paper in the Astrophysical Journal by Surhud More, Benedikt Diemer and Andre Kravtsov.

    University of Pennsylvania research could shed light on the distribution of one of the most mysterious substances in the universe. In the 1970s, scientists noticed something strange about the motion of galaxies. All the matter at the edge of spiral galaxies was rotating just as fast as material in the inner part of the galaxy. But according to the laws of gravity, objects on the outskirts should be moving slower. The explanation: dark matter, which affects everything from how objects move within a galaxy to how galaxies and galaxy clusters clump together in the first place...

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    Physicists create ‘Negative Mass’

    April 17, 2017, Categories  Astronomy/Space

    Hypothetically, matter can have negative mass in the same sense that an electric charge can be either negative or positive. With negative mass, if you push something, it accelerates toward you. Forbes said, "It looks like the rubidium hits an invisible wall." (stock image). Credit: © ktsdesign / Fotolia

    Hypothetically, matter can have negative mass in the same sense that an electric charge can be either negative or positive. With negative mass, if you push something, it accelerates toward you. Forbes said, “It looks like the rubidium hits an invisible wall.” (stock image). Credit: © ktsdesign / Fotolia

    Experimental technique can help probe phenomena in astrophysics and cosmology. Washington State University physicists have created a fluid with negative mass, which is exactly what it sounds like. Push it, and unlike every physical object in the world we know, it doesn’t accelerate in the direction it was pushed. It accelerates backwards...

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    Sperm tested as possible candidate for delivering Cancer Medications in female patients

    April 16, 2017, Categories  Health/Medical, Biology/Biotechnology

    Schematic depicting tumor targeted drug delivery by a sperm-hybrid micromotor under magnetic guidance with mechanical sperm release trigger. Credit: arXiv:1703.08510 [physics.med-ph]

    Schematic depicting tumor targeted drug delivery by a sperm-hybrid micromotor under magnetic guidance with mechanical sperm release trigger. Credit: arXiv:1703.08510 [physics.med-ph]

    A team of researchers with the Institute for Integrative Nanosciences in Germany has tested the possibility of using sperm cells to deliver drugs to cancerous tumors in female patients. The group describes how such a technique might work, their initial test results and what they learned from their experiments. In this new effort, they looked into the idea of using a natural carrier to deliver helpful drugs to specified targets—sperm cells delivering drugs guided to tumors and other problem sites in the female reproductive tract...

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    Immunotherapy for Glioblastoma Well Tolerated; Survival Gains observed

    April 16, 2017, Categories  Health/Medical, Biology/Biotechnology

    Brain scans are from glioblastoma trial from manuscript. Credit: Clinical Cancer Research/American Association for Cancer Research

    Brain scans are from glioblastoma trial from manuscript. Credit: Clinical Cancer Research/American Association for Cancer Research

    Dendritic cell vaccine supports further study in larger trials. A phase 1 study of 11 patients with glioblastoma who received injections of an investigational vaccine therapy and an approved chemotherapy showed the combination to be well tolerated while also resulting in unexpectedly significant survival increases, researchers at the Duke Cancer Institute report. Patients treated with the study drug (dose-intensified temozolomide and vaccines) were continuously monitored for toxicity and adverse events. Study patients experienced known side effects with temozolomide, including nausea, lymphopenia, thrombocytopenia and fatigue.

    There were no treatment limiting a...

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